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PERMFILE124573
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PERMFILE124573
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Last modified
8/24/2016 10:22:07 PM
Creation date
11/25/2007 12:45:06 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
X200522306
IBM Index Class Name
Permit File
Doc Date
5/20/2005
Doc Name
NOI Application
From
Oxbow Mining, LLC
To
DMG
Media Type
D
Archive
No
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Most drilling can be conducted with minimal site preparation, since the drill rig can be set-up and leveled <br />using self-contained hydraulic jacks. Where site preparation is necessary due to the need to utilize drilling <br />fluids, a pad having maximum dimensions of approximately 60 feet in width and 100 feet in length will be <br />established. Pad preparation will involve the use of a tracked dozer or backhce to establish a level drill site. <br />If topsoil exists, up to 12" will be salvaged and stored in a stockpile(s) located along the side of the pad and <br />marked with a "topsoil" sign. Soil stripping will not occtu in areas that have been previously disturbed and <br />little or no soil material remahts, typically in areas of 30% or greater slopes. The site will be restored to <br />approximate original contour. Shrubs, trees and other organic matter removed during pad preparation maybe <br />incorporated onto the regraded surface prior to seeding to enhance reclamation of this disturbed site. <br />If feasible, based on hole depth and drilling conditions, portable drill mud pits will be utilized to mix and <br />contain necessary drilling fluids. If greater pit capacity is required than would be feasible using portable pits, <br />mud pits for the containment of drilling fluids and cuttings will be excavated with a backhce within the pad <br />azea. Each pit will typically be approximately 20 feet in length, 4 feet in width and 8 feet deep (23.7 cubic <br />yards each). The pits will be located in the "cut" portion of the pad for pad stability. The maximum <br />disturbance area for each drill site is expected to be approximately 0.14 acres. <br />No surface blasting is anticipated. <br />Drilling and Related Activities - <br />Drill holes will be drilled using rotary or auger drilling methods to the depth of the desired coring interval <br />that will vary in the drill holes. Total drill hole depths will range from approximately 375 feet (in ECM-OS- <br />43) to 575 feet (in ECM-OS-39). In order to avoid potential sample contamination, drill holes will be <br />completed to the extent possible with air, air-foam, or water as the circulation medium If drilling muds are <br />necessary to maintain circulation and drill hole integrity, polymer muds that aze free of metallic compounds <br />will be utilized. <br />All drilling and related operations will be conducted by experienced exploration drillers in such a way as to <br />minimise potential enviromnental impacts, and will be supervised by a qualified geologist or engineer. <br />During drilling operations, water levels and flows in the drill holes (if any) will be closely monitored in order <br />to characterize hydrologic conditions in the D-seam The interval to be drilled above the D seam contains no <br />aquifer. Samples of immediate roof and floor rock materials and D-seam coal will be logged and may be <br />collected during drilling for subsequent analysis. <br />During drilling, OMLLC will control dust from drilling and related activities, divert and control both natural <br />runoff from disturbed azeas and fluid loss from drilling, and will clean-up anytrash or debris. If air is utilized <br />as the circulation medium, dust from drilling will be controlled by a flexible shroud at the drill collaz. Drill <br />cuttings and portable pits or excavated mud pits will effectively contain drilling fluids as discussed above. <br />All drilling equipment will be equipped with fire extinguishers and shovels in case there is a fire. Oil waste, <br />filters, etc. will be hauled offsite for proper disposal. <br />Hole Completion -Due to long-term access issues and/or the depth of the holes, OMLLC does not plan <br />to complete the exploration holes as water monitoring wells or methane vent wells. The hole depths are <br />noted above. <br />Site Reclamation -Upon completion of drilling and related activities, all drill holes will be backfilled, sealed <br />and abandoned. During drilling, fluid return will be monitored to identify the depth and extent of any water- <br />producing zones. Upon abandonment, bentonite chips or a bentonite gel or simi]ar seal will be established in <br />the bottom of the hole, extending to at least within 10' of the surface. Accumulations of drill cuttings and <br />mud will be buried in the mud pit (if an}). A cement plug will be set in the drill hole ten (10) feet below the <br />ground to within three (3) feet of the surface. <br />
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